CN102062719A - Method for detecting air permeability of sintering mixture and sintering device - Google Patents
Method for detecting air permeability of sintering mixture and sintering device Download PDFInfo
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- CN102062719A CN102062719A CN2009102233931A CN200910223393A CN102062719A CN 102062719 A CN102062719 A CN 102062719A CN 2009102233931 A CN2009102233931 A CN 2009102233931A CN 200910223393 A CN200910223393 A CN 200910223393A CN 102062719 A CN102062719 A CN 102062719A
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Abstract
The invention provides a method for detecting air permeability of a sintering mixture, which comprises the following steps: sintering a sintering mixture in an ignition furnace, and determining the air permeability of the sintering mixture according to the intensity of illumination of flame generated in the ignition furnace. The invention also provides a sintering device which comprises an ignition furnace (51) and a sintering machine (52), wherein the sintering machine (52) is positioned below the ignition furnace (51) and used for supplying the sintering mixture to the ignition furnace (51); a testing unit (53) is arranged above the sintering machine (52) and adjacent to the ignition furnace (51); and the testing unit (53) comprises an illuminance detection device (54) and a computing device. The method and device provided by the invention can be used for accurately detecting the air permeability of the sintering mixture in time.
Description
Technical field
The present invention relates to a kind of detection method of sintered mixture ventilation, and a kind of sintering equipment that is used to detect the gas penetration potential of sinter mixture.
Background technology
Sintering process is the important step in the smelting technique, and the powdery mixed material (being compound) that is used for being difficult for smelting is sintered to the sintering deposit that is easy to smelt.The graininess degree of compound, the size of particle diameter for example has direct influence to the gas penetration potential of compound.Generally, gas penetration potential is meant the complexity that the solid granule layer allows gas to pass through, and also is the sign of weighing the mixture gap rate, therefore, can reflect the graininess degree of compound with mixture ventilation.The gas penetration potential of compound has a significant impact the quality of sintering deposit, so mixture ventilation is the important indicator in the sintering process, can be used for sintering process control, and this is to improving sinter quality, and reducing sintering energy consumption etc. has important effect.Described mixture ventilation is meant under certain pressure condition in the unit interval gas flow by unit area.
Existing sintering system as shown in Figure 1, in described sintering system, Iron Ore Powder and auxiliary material are transported to through batching conveyer 1 and add the water mixing in the mixer 2, the auxilliary bed material of sintering supplies on the sintering machine of sintering equipment 5 by feeding device 4, the compound that obtains after mixing simultaneously supplies on the sintering machine of sintering equipment 5 by distributing device 3, and cover on the good auxilliary bed material of lay, the compound that obtains after the described mixing enters as sinter mixture with described auxilliary bed material and carries out sintering in the sintering equipment 5, the heat sinter that obtains behind the sintering carries out fragmentation by breaker 6, the heat sinter that obtains after the fragmentation carries out cooling off in the central cooler 7, thereby obtains the finished product sintering deposit; The flue gas that produces in sintering process enters gas outlet 8 by bellows 9 (bellows that are provided with in the sintering equipment are No. 1 bellows, are also referred to as the lighter bellows), and the flue gas that enters in the gas outlet 8 emits by blower fan 10.
The method that detects sintered mixture ventilation is mainly judged according to lighter bellows negative pressure and ignition temperature at present.Yet all there is defective in these two kinds of methods, are subjected to the influence of gas outlet negative pressure very big as lighter bellows negative pressure, and when the gas outlet negative pressure fluctuateed, lighter bellows negative pressure also can and then fluctuate, and therefore, can not truly reflect the gas penetration potential of sinter mixture; Ignition temperature is because there is inertia in temperature detection itself, thermotonus is lagged behind, and, in the lighter dross, the ignition temperature of also promptly lighting a fire when wrapping the thermometer that detects ignition temperature after the fire resistive material fusing of burner hearth can not be represented real ignition temperature, therefore, ignition temperature can not truly reflect the gas penetration potential of sinter mixture.
Summary of the invention
The objective of the invention is in order to overcome the defective that existing sintered mixture ventilation detection method can not accurately detect the gas penetration potential of sinter mixture, a kind of detection method of new sintered mixture ventilation is provided, has adopted this method can detect the gas penetration potential of sinter mixture accurately and timely.
Another object of the present invention provides a kind of sintering equipment.
The present inventor finds, the intensity of illumination of the flame that sintering produces in described ignition furnace can not change with the variation of ignition temperature and gas exhaust duct pressure, and, the inventor finds by long-term practice, the intensity of illumination of the flame that sinter mixture produces in sintering process and the gas penetration potential of sinter mixture are the relation of inverse ratio, therefore, by adopting illumination testing apparatus to detect the intensity of illumination of the flame that sinter mixture produces in sintering process, can determine the gas penetration potential of sinter mixture.
The invention provides a kind of detection method of sintered mixture ventilation, wherein, this method comprises makes sinter mixture carry out sintering in ignition furnace, and determines the gas penetration potential of described sinter mixture according to the intensity of illumination of the flame of sintering generation in the described ignition furnace.
The present invention also provides a kind of sintering equipment, described sintering equipment comprises ignition furnace and sintering machine, described sintering machine is positioned at the below of described ignition furnace, be used for providing sinter mixture to described ignition furnace, wherein, in described ignition furnace position adjacent and above described sintering machine, also be provided with test cell, described test cell comprises illumination testing apparatus and calculation element, described illumination testing apparatus is used for detecting the intensity of illumination of the flame that described ignition furnace sintering produces, and described calculation element is determined the gas penetration potential of described sinter mixture according to the intensity of illumination parameter that obtains.
According to the detection method of sintered mixture ventilation provided by the invention, and adopt described sintering equipment provided by the invention, can detect the gas penetration potential of sinter mixture accurately and timely.
Description of drawings
Fig. 1 represents the structural representation of sintering system in the prior art;
Fig. 2 represents the sintering equipment structural representation of one embodiment of the present invention;
Fig. 3 represents the sintering equipment structural representation of another embodiment of the invention;
Fig. 4 represents the device for checking air permeability structural representation that uses in the test case.
Embodiment
The detection method of described sintered mixture ventilation provided by the invention comprises makes sinter mixture carry out sintering in ignition furnace, and determines the gas penetration potential of described sinter mixture according to the intensity of illumination of the flame of sintering generation in the described ignition furnace.
In described method provided by the invention, because the intensity of illumination of the flame that sintering produces in the described ignition furnace and the gas penetration potential of described sinter mixture are inverse relation, therefore, the relational expression of the intensity of illumination of the flame that the gas penetration potential of described sinter mixture can produce according to sintering in the gas penetration potential of described sinter mixture and the described ignition furnace is determined, concrete, the relational expression of the gas penetration potential of described intensity of illumination parameter and described sinter mixture as:
Wherein, G represents the gas penetration potential of described sinter mixture, and unit is m
3/ m
2S; Φ represents the intensity of illumination of the flame that sintering produces in the described ignition furnace, and unit is Lux; μ is a permeability coefficient, and span is 990-1100.The value of μ can suitably be selected according to the thickness of described sinter mixture in sintering process, and generally, the thickness of μ and described sinter mixture is linear, and promptly the thickness of described sinter mixture is big more, and then the numerical value of μ is more little; And the thickness of described sinter mixture can be the 300-800 millimeter.
Generally, the gas penetration potential value (G) of sinter mixture can be 0.75-1.1, and when described gas penetration potential value was big more, the gas penetration potential of sinter mixture was good more; Otherwise, when described gas penetration potential value more hour, the gas penetration potential of sinter mixture is poor more.
In described method provided by the invention, there is no particular limitation to make sinter mixture carry out the method for sintering and condition in ignition furnace, can adopt conventional method and the operating conditions of using in this area to implement.
The present invention also provides a kind of sintering equipment, shown in Fig. 2 and 3, described sintering equipment comprises ignition furnace 51 and sintering machine 52, described sintering machine 52 is positioned at the below of described ignition furnace 51, be used for providing sinter mixture to described ignition furnace 51, wherein, in described ignition furnace 51 position adjacent and above described sintering machine 52, also be provided with test cell 53, described test cell 53 comprises illumination testing apparatus 54 and calculation element, described illumination testing apparatus 54 is used for detecting the intensity of illumination of the flame that described ignition furnace 51 sintering produce, and described calculation element is determined the gas penetration potential of described sinter mixture according to the intensity of illumination parameter that obtains.
In described sintering equipment, described ignition furnace 51 and sintering machine 52 all can be selected ignition furnace 51 and the sintering machine 52 that uses in the conventional sintering equipment that uses in this area for use.
In one embodiment of the invention, in described sintering equipment, described test cell 53 can also comprise all around and the airtight chamber in top, described illumination testing apparatus 54 is placed in the described chamber, described chamber be positioned at described sintering machine 52 the top and with described ignition furnace 51 adjacent settings, described chamber can comprise top surface, first side, second side, the 3rd side and the 4th side, described first side is the surface adjacent with described ignition furnace 51, described second side is and the described first side facing surfaces, described first side and second side are arranged on the top of sintering machine 52 along the direction of transfer of described sintering machine 52, and described the 3rd side and the 4th side are separately positioned on the both sides of sintering machine 52; Has the gap between the lower end of described first side and the described sintering machine 52, described gap is enough to make described sinter mixture to pass through, and is enough to make the light of the flame that sintering produces in the described ignition furnace 51 to shine on the described illumination testing apparatus 54 by described gap; The influence of the brightness value of illumination testing apparatus 54 being surveyed for the ambient light that reduces daytime or night as far as possible, described first side, second side, the distance of the lower end of the 3rd side and the 4th side and sintering machine 52 is as far as possible little, the lower end of preferred sintering machine 52 and the 3rd side and the 4th side slidably is tightly connected, preferably make the lower end of described first side and the minor increment between the described sintering machine 52 less than the lower end of described second side and the minor increment between the described sintering machine 52, minor increment between the lower end of described second side and the described sintering machine 52 is as far as possible little under the situation that the assurance sinter mixture can pass through, particularly, minor increment between the lower end of described second side and described sintering machine 52 upper surfaces can be the 150-300 millimeter, minor increment between the lower end of described first side and described sintering machine 52 upper surfaces can be the 350-800 millimeter, is preferably the 450-800 millimeter.Under this preferable case, the light of the flame that sintering produces in the described ignition furnace can fully enter described chamber, and shines on the described illumination testing apparatus 54; Minor increment between the lower end of described the 3rd side and the 4th side and described sintering machine 52 sides is the 0-300 millimeter, and the lower end of described the 3rd side and described the 4th side can be above described sintering machine 52, also can be below described sintering machine.Under the most preferred case, the lower end of described first side, second side, the 3rd side and the 4th side is parallel with surface level.
In another embodiment of the invention, described test cell 53 can also comprise casing, described casing and the 51 adjacent settings of described ignition furnace, described illumination testing apparatus 54 is placed in the described casing, the lower end of described casing and described sintering machine 52 have the gap, and described gap makes sinter mixture to pass through, under the most preferred case, the lower end of described casing is parallel with surface level, and with the distance of sintering machine be the 150-300 millimeter.In described casing, the side of a side adjacent with described ignition furnace is provided with opening, and described opening makes the light of the flame that sintering produces in the described ignition furnace 51 can enter in the described casing.In the present invention, there is no particular limitation for the area of described opening, can shine in the described casing, generally as long as guarantee the light that burns the flame that sintering produces in the described ignition furnace 51, the area of described opening can be 0.1-4 square metre, is preferably 1-2 square metre.
In described sintering equipment provided by the invention, there is no particular limitation in the position that the position that described illumination testing apparatus 54 is provided with is provided with, under the preferable case, the position that described illumination testing apparatus 54 is provided with makes the light of the flame that sintering produces in the described ignition furnace 51 can shine directly on the described illumination testing apparatus 54, the light of the flame that sintering produces in the perhaps described ignition furnace 51 can shine on the described illumination testing apparatus 54 after reflecting, and the light of the flame that sintering produces in the preferred described ignition furnace 51 shines directly on the described illumination testing apparatus 54.In the present invention, described illumination testing apparatus 55 can be for detecting the various pick-up units of intensity of illumination, and generally, described illumination testing apparatus 55 can be the conventional various illuminometers that use in this area.
In a kind of preferred implementation of the present invention, comprise that in described sintering equipment under the situation of described chamber or described casing, the reflecting rate of the side of described chamber or described casing is more than 30%.In this preferred implementation, as long as the light of the flame that sintering produces in the described ignition furnace 51 can enter described chamber or described casing, can make the light of the flame that sintering produces in the described ignition furnace shine in the described illumination testing apparatus 54, thereby guarantee that described calculation element can accurately obtain the gas penetration potential of described sinter mixture according to the intensity of illumination that records with enough amounts.In the present invention, described calculation element can be for having the various calculation elements of computing function, for example computing machine.
In described sintering equipment provided by the invention, owing to be provided with detecting unit 53, thus can in the process of implementing sintering, detect the gas penetration potential of described sinter mixture.In described sintering equipment, because described sinter mixture carries out sintering in unsealed environment, therefore, measured gas penetration potential is the gas penetration potential numerical value under the environmental pressure.
Below in conjunction with Fig. 2 and Fig. 3 the detection method of described sintered mixture ventilation provided by the invention and the principle of work of described sintering equipment are described in more detail.
In one embodiment of the invention, as shown in Figure 2, described sintering equipment comprises detecting unit 53, ignition furnace 51 and sintering machine 52, according to the trend of described sinter mixture in described sintering equipment, described detecting unit 53 is before ignition furnace 51, and described sintering machine 52 is below described detecting unit 53 and ignition furnace 51.Around described detecting unit 53 comprises and the airtight chamber in top, be arranged on illumination testing apparatus 54 and calculation element in the described chamber, described chamber and the 51 adjacent settings of described ignition furnace, described illumination testing apparatus 54 for example can be illuminometer (by the safe bodyguard production in Beijing, model is TES1330A).Described chamber comprises top surface, first side, second side, the 3rd side and the 4th side, described first side is the surface adjacent with described ignition furnace 51, described second side is and the described first side facing surfaces, described first side and second side are arranged on the top of sintering machine 52 along the direction of transfer of described sintering machine 52, and described the 3rd side and the 4th side are separately positioned on the both sides of sintering machine 52.Minor increment between the lower end of described first side and the described sintering machine 52 is the 350-800 millimeter, is preferably the 450-800 millimeter; Minor increment between the lower end of described second side and the described sintering machine 52 is the 150-300 millimeter; The lower end and the minor increment between the described sintering machine 52 of described the 3rd side and the 4th side are the 0-300 millimeter.Sinter mixture on the described sintering machine can be by the lower end of described second side and the gap between the described sintering machine, and the light of the flame that sintering produces in the described ignition furnace 51 can be by the lower end of described first side and the gap between the described sintering machine 52.Described first side, second side, the 3rd side and the 4th side are that material more than 30% is made by reflecting rate preferably, the light of the flame that sintering produces in the described ignition furnace 51 enters after the described chamber, can shine directly on the described illumination testing apparatus 54, also can shine on the described illumination testing apparatus 54 after the offside reflection by described chamber.
Described sintering equipment is in the process of operation, and described sinter mixture enters in the described ignition furnace 51 by described sintering machine 52 and carries out sintering.In the process of sintering, the light of the flame that sintering produces in the described ignition furnace 51 enters in the described chamber by the lower end and the gap between the described sintering machine 52 of first side of described chamber, and shine directly into or shine on the described illumination testing apparatus 54 through after the offside reflection, described illumination testing apparatus 54 detects the intensity of illumination of described light, then by described calculation element, according to the relational expression of the gas penetration potential of described sinter mixture and intensity of illumination as:
(wherein, G represents the gas penetration potential of described sinter mixture, and Φ represents the intensity of illumination of the flame that described sinter mixture produces in sintering process, and μ is a permeability coefficient), calculate the quantized value of described sintered mixture ventilation.
In another embodiment of the invention, as shown in Figure 3, described sintering equipment comprises detecting unit 53, ignition furnace 51 and sintering machine 52, according to the trend of described sinter mixture in described sintering equipment, described detecting unit 53 is before ignition furnace 51, and described sintering machine 52 is below described detecting unit 53 and ignition furnace 51.Described detecting unit 53 comprises casing, is arranged on illumination testing apparatus 54 and calculation element in the described casing, described casing and the 51 adjacent settings of described ignition furnace, described illumination testing apparatus 54 for example can be illuminometer (by the safe bodyguard production in Beijing, model is TES1330A).The lower end of described casing and described sintering machine 52 have the gap, and described gap makes the sinter mixture on the described sintering machine 52 to pass through.In described casing, the side of a side adjacent with described ignition furnace 51 is provided with opening, and described opening makes the light of the flame that sintering produces in the described ignition furnace 51 can enter in the described casing, and the area of described opening is preferably 0.1-4 square metre.The side of described casing is that material more than 30% is made by reflecting rate preferably, the light of the flame that sintering produces in the described ignition furnace 51 enters after the described casing, can shine directly on the described illumination testing apparatus 54, also can shine on the described illumination testing apparatus 54 after the offside reflection by described casing.
Described sintering equipment is in the process of operation, and described sinter mixture enters in the described ignition furnace 51 by described sintering machine 52 and carries out sintering.In the process of sintering, the light of the flame that sintering produces in the described ignition furnace 51 enters in the described casing by the opening on the adjacent side of described casing and described ignition furnace 51, and shine directly into or shine on the described illumination testing apparatus 54 through after the offside reflection, described illumination testing apparatus 54 detects the intensity of illumination of described light, then by described calculation element, according to the relational expression of the gas penetration potential of described sinter mixture and intensity of illumination as:
(wherein, G represents the gas penetration potential of described sinter mixture, and Φ represents the intensity of illumination of the flame that described sinter mixture produces in sintering process, and μ is a permeability coefficient), calculate the quantized value of described sintered mixture ventilation.
The present invention is further detailed explanation by the following examples.
Embodiment 1
Present embodiment is used to illustrate the detection method of described sintering equipment provided by the invention and sintered mixture ventilation.
As shown in Figure 2, described sintering equipment comprises detecting unit 53, ignition furnace 51 and sintering machine 52, and described detecting unit 53 is before ignition furnace 51, and described sintering machine 52 is below described detecting unit 53 and ignition furnace 51.Described detecting unit 53 comprises chamber, is arranged on illumination testing apparatus 54 and calculation element in the described chamber, described chamber and the 51 adjacent settings of described ignition furnace, and described illumination testing apparatus 54 is illuminometer (by the safe bodyguard production in Beijing, model is TES1330A).Described chamber comprises top surface, first side, second side, the 3rd side and the 4th side, described first side is the surface adjacent with described ignition furnace 51, described second side is and the described first side facing surfaces, described first side and second side are arranged on the top of sintering machine 52 along the direction of transfer of described sintering machine 52, and described the 3rd side and the 4th side are separately positioned on the both sides of sintering machine 52.Minor increment between the lower end of described first side and the described sintering machine 52 is 450 millimeters; Minor increment between the lower end of described second side and the described sintering machine 52 is 200 millimeters; The lower end and the minor increment between the described sintering machine 52 of described the 3rd side and the 4th side are 200 millimeters.
Described sintering equipment makes the sinter mixture of 550 millimeters thick enter in the described ignition furnace 51 by described sintering machine 52 and carries out sintering in the process of operation.In the process of sintering, the light of the flame that sintering produces in the described ignition furnace 51 enters in the described chamber by the lower end and the gap between the described sintering machine 52 of first side of described chamber, and shine directly on the described illumination testing apparatus 54, the intensity of illumination that described illumination testing apparatus 54 detects the flame of described sinter mixture sintering generation is 1095Lux, then by described calculation element, according to the relational expression of the gas penetration potential of described sinter mixture and intensity of illumination as:
(wherein, G represents the gas penetration potential of described sinter mixture, and Φ represents the intensity of illumination of the flame that described sinter mixture produces in sintering process, and μ is a permeability coefficient, and μ is 1045) is 0.95m thereby calculate described sintered mixture ventilation value
3/ m
2S.
Embodiment 2
Present embodiment is used to illustrate the detection method of described sintering equipment provided by the invention and sintered mixture ventilation.
As shown in Figure 2, described sintering equipment comprises detecting unit 53, ignition furnace 51 and sintering machine 52, and described detecting unit 53 is before ignition furnace 51, and described sintering machine 52 is below described detecting unit 53 and ignition furnace 51.Described detecting unit 53 comprises chamber, is arranged on illumination testing apparatus 54 and calculation element in the described chamber, described chamber and the 51 adjacent settings of described ignition furnace, and described illumination testing apparatus 54 is illuminometer (by the safe bodyguard production in Beijing, model is TES1330A).Described chamber comprises top surface, first side, second side, the 3rd side and the 4th side, described first side is the surface adjacent with described ignition furnace 51, described second side is and the described first side facing surfaces, described first side and second side are arranged on the top of sintering machine 52 along the direction of transfer of described sintering machine 52, and described the 3rd side and the 4th side are separately positioned on the both sides of sintering machine 52.Minor increment between the lower end of described first side and the described sintering machine 52 is 550 millimeters; Minor increment between the lower end of described second side and the described sintering machine 52 is 180 millimeters; The lower end and the minor increment between the described sintering machine 52 of described the 3rd side and the 4th side are 50 millimeters.
Described sintering equipment makes the sinter mixture of 300 millimeters thick enter in the described ignition furnace 51 by described sintering machine 52 and carries out sintering in the process of operation.In the process of sintering, the light of the flame that sintering produces in the described ignition furnace 51 enters in the described chamber by the lower end and the gap between the described sintering machine 52 of first side of described chamber, and shine directly on the described illumination testing apparatus 54, the intensity of illumination that described illumination testing apparatus 54 detects the flame of described sinter mixture sintering generation is 943Lux, then by described calculation element, according to the relational expression of the gas penetration potential of described sinter mixture and intensity of illumination as:
(wherein, G represents the gas penetration potential of described sinter mixture, and Φ represents the intensity of illumination of the flame that described sinter mixture produces in sintering process, and μ is a permeability coefficient, and μ is 990) is 1.05m thereby calculate described sintered mixture ventilation value
3/ m
2S.
Embodiment 3
Present embodiment is used to illustrate the detection method of described sintering equipment provided by the invention and sintered mixture ventilation.
Described sintering equipment comprises detecting unit 53, ignition furnace 51 and sintering machine 52.Described detecting unit 53 comprises casing, is arranged on illumination testing apparatus 54 and calculation element in the described casing, the side of described casing is that 35% steel are made by reflecting rate, and with described ignition furnace 51 adjacent settings, described illumination testing apparatus 54 for example can be illuminometer (by the safe bodyguard production in Beijing, model is TES1330A).The lower end of described casing is parallel with surface level, and with the distance of sintering machine 52 be 200 millimeters.Described casing and described ignition furnace 51 adjacent sides have opening, and the area of described opening is 0.8 square metre (width is 2 meters, highly is 400 millimeters).
Described sintering equipment makes the sinter mixture of 700 millimeters thick enter in the described ignition furnace 51 by described sintering machine 52 and carries out sintering in the process of operation.In the process of sintering, the light of the flame that sintering produces in the described ignition furnace 51 enters in the described casing by the opening on the adjacent side of described casing and described ignition furnace 51, and shine on the described illumination testing apparatus 54 after the process offside reflection, the intensity of illumination that described illumination testing apparatus 54 detects the flame of described sinter mixture sintering generation is 1294Lux, then by described calculation element, according to the relational expression of the gas penetration potential of described sinter mixture and intensity of illumination as:
(wherein, G represents the gas penetration potential of described sinter mixture, and Φ represents the intensity of illumination of the flame that described sinter mixture produces in sintering process, and μ is a permeability coefficient, and μ is 1074) is 0.83m thereby calculate described sintered mixture ventilation value
3/ m
2S.
Test case 1
Adopt the gas penetration potential value of device for checking air permeability detection sinter mixture as shown in Figure 4, described device for checking air permeability comprises hopper C1, measuring cell C2, switch C3, spinner-type flowmeter C4 and air pump C5.The described sinter mixture that is used for sintering among the embodiment 1-3 is respectively got 1 part, be labeled as A1, A2 and A3 respectively, and respectively A1, A2 and A3 to be made thickness be that 550mm, 300mm and 700mm, diameter are that 400mm, cross-sectional area are 0.1256m
2The column sinter mixture, and be placed on respectively among the hopper C1, opening switch C3 and air pump 5 makes gas pass through described sinter mixture, the Δ P that the work efficiency of air pump C5 records measuring cell C3 is controlled to be 550Pa, 300Pa and 700Pa respectively, and the gas flow that detects then by spinner-type flowmeter C4 is respectively 0.118m
3/ s, 0.132m
3/ s and 0.106m
3/ s, then, according to the sintered mixture ventilation formula as
(G is the gas penetration potential of sinter mixture, and unit is m
3/ m
2S; Q is a gas flow, and unit is m
3/ s; A is the exhausting area, and unit is m
2Δ P is a pressure differential, and unit is Pa; H is a thickness of feed layer, and unit is mm; N is a coefficient, and span is 0.6-1.1), the gas penetration potential value that calculates described sinter mixture is respectively 0.94m
3/ m
2S, 1.05m
3/ m
2S and 0.84m
3/ m
2S.
This shows,, and adopt described sintering equipment provided by the invention, can detect the gas penetration potential of sinter mixture accurately and timely according to the detection method of sintered mixture ventilation provided by the invention.
Claims (9)
1. the detection method of a sintered mixture ventilation is characterized in that, this method comprises makes sinter mixture carry out sintering in ignition furnace, and determines the gas penetration potential of described sinter mixture according to the intensity of illumination of the flame that produces in the described ignition furnace.
2. method according to claim 1, wherein, the relational expression of the gas penetration potential of described intensity of illumination parameter and described sinter mixture as:
Wherein, G represents the gas penetration potential of described sinter mixture, and unit is m
3/ m
2S; Φ represents the intensity of illumination of the flame that described ignition furnace sintering produces, and unit is Lux; μ is a permeability coefficient, and span is 990-1100.
3. sintering equipment, described sintering equipment comprises ignition furnace (51) and sintering machine (52), described sintering machine (52) is positioned at the below of described ignition furnace (51), be used for providing sinter mixture to described ignition furnace (51), it is characterized in that, also be provided with test cell (53) in described ignition furnace (51) position adjacent and in the top of described sintering machine (52), described test cell (53) comprises illumination testing apparatus (54) and calculation element, described illumination testing apparatus (54) is used for detecting the intensity of illumination of the flame that described ignition furnace (51) sintering produces, and described calculation element is determined the gas penetration potential of described sinter mixture according to the intensity of illumination parameter that obtains.
4. sintering equipment according to claim 3, wherein, described test cell (53) also comprises all around and the airtight chamber in top, described illumination testing apparatus (54) is placed in the described chamber, described chamber be positioned at described sintering machine (52) the top and with the adjacent setting of described ignition furnace (51), described chamber comprises top surface, first side, second side, the 3rd side and the 4th side, described first side is and the adjacent surface of described ignition furnace (51), described second side is and the described first side facing surfaces, described first side and second side are arranged on the top of sintering machine (52) along the direction of transfer of described sintering machine (52), and described the 3rd side and the 4th side are separately positioned on the both sides of sintering machine (52); Has the gap between the lower end of described first side and the described sintering machine (52), described gap is enough to make described sinter mixture to pass through, and is enough to make the light of the flame that sintering produces in the described ignition furnace (51) to shine on the described illumination testing apparatus (54) by described gap; Minor increment between the lower end of described second side and the described sintering machine (52) is the 150-300 millimeter, and less than the lower end of described first side and the minor increment between the described sintering machine (52); Minor increment between the lower end of described the 3rd side and the 4th side and the described sintering machine (52) is the 0-300 millimeter.
5. sintering equipment according to claim 4, wherein, the minor increment between the lower end of described first side and the described sintering machine (52) is the 350-800 millimeter.
6. sintering equipment according to claim 3, wherein, described test cell (53) also comprises casing, described casing and the adjacent setting of described ignition furnace (51), described illumination testing apparatus (54) is placed in the described casing, the lower end of described casing and described sintering machine (52) have the gap, and described gap makes sinter mixture to pass through; In described casing, the side of a side adjacent with described ignition furnace is provided with opening, and described opening makes the light of the flame that the middle sintering of described ignition furnace (51) produces can enter in the described casing.
7. sintering equipment according to claim 6, wherein, the area of described opening is 0.1-4 square metre.
8. according to claim 4 or 6 described sintering equipments, wherein, the position of described illumination testing apparatus (54) setting makes the light of the flame that the middle sintering of described ignition furnace (51) produces can shine directly on the described illumination testing apparatus (54), and the light of the flame that sintering produces in the perhaps described ignition furnace (51) can shine on the described illumination testing apparatus (54) after reflecting.
9. sintering equipment according to claim 8, wherein, the reflecting rate of the sidewall of described chamber or casing is more than 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910223393 CN102062719B (en) | 2009-11-18 | 2009-11-18 | Method for detecting air permeability of sintering mixture and sintering device |
Applications Claiming Priority (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021645A (en) * | 2014-04-17 | 2015-11-04 | 宝山钢铁股份有限公司 | Test unit for online analysis of sintering process and application method thereof |
| CN106022377A (en) * | 2016-05-20 | 2016-10-12 | 中南大学 | Online prediction method for iron ore sintering bed permeability states |
| CN110199188A (en) * | 2016-12-02 | 2019-09-03 | 株式会社Posco | Air penetrability measuring device and agglomerating plant |
| CN113077848A (en) * | 2021-03-26 | 2021-07-06 | 马鞍山钢铁股份有限公司 | Online judgment and calculation method for air permeability of sinter bed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100436609C (en) * | 2007-04-06 | 2008-11-26 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Heavy-duty material inlay sintering process production technique |
| CN101294243B (en) * | 2008-07-01 | 2011-02-09 | 攀钢集团研究院有限公司 | Pelletisation process for iron ore concentrate sintered mix |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021645A (en) * | 2014-04-17 | 2015-11-04 | 宝山钢铁股份有限公司 | Test unit for online analysis of sintering process and application method thereof |
| CN105021645B (en) * | 2014-04-17 | 2018-03-09 | 宝山钢铁股份有限公司 | The experimental rig and its application method of on-line analysis sintering process |
| CN106022377A (en) * | 2016-05-20 | 2016-10-12 | 中南大学 | Online prediction method for iron ore sintering bed permeability states |
| CN106022377B (en) * | 2016-05-20 | 2019-07-23 | 中南大学 | A kind of on-line prediction method of agglomeration for iron mine bed permeability state |
| CN110199188A (en) * | 2016-12-02 | 2019-09-03 | 株式会社Posco | Air penetrability measuring device and agglomerating plant |
| CN110199188B (en) * | 2016-12-02 | 2022-07-05 | 株式会社Posco | Air permeability measuring apparatus and sintering apparatus |
| CN113077848A (en) * | 2021-03-26 | 2021-07-06 | 马鞍山钢铁股份有限公司 | Online judgment and calculation method for air permeability of sinter bed |
| CN113077848B (en) * | 2021-03-26 | 2024-05-14 | 马鞍山钢铁股份有限公司 | Online judgment and calculation method for air permeability of sinter bed |
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